"It's logical," Hans agreed, tilting his head slightly to one side as he studied the differences. He might need to know this little fact next year. Or if for some reason he lost his purchases of today.
He doubted having the proper ingredients would help him much in the long run, but all the same he'd rather not buy a bunch of stuff that would be binned after the first class.
"I am afraid I do not share the interest for potions," Hans revealed after a second, rubbing the back of his neck as he frowned. "I haff no doubt that I von't be remembering vot that is even called tomorrow."